<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>


  <script>

    const obj = {
      name: "123",

      [1 + 1]: "猜猜我是级"
    }

    function setObjKey(key) {
      return {
        [key]: "123"
      }
    }

    const obj2 = setObjKey('name')
    console.log('obj2  ----->  ', obj2);

  </script>
</body>

</html>